Tom got addicted to chatting and playing e-games on the net, which made his father ________. Which of the following is not suitable?

1. A.
   on cloud nine
2. B.
   hot under the collar
3. C.
   feel blue
4. D.
   down in the dumps

 Tom got addicted to chatting and playing e-games on the net, which made his father ________.

  Which of the following is not suitable?

  A. on cloud nine                                    B. hot under the collar

  C. feel blue                                           D. down in the dumps